feat: add smooth scroll and hero parallax

site/main.js

@@ -0,0 +1,24 @@
+// Smooth scroll for anchor links (CSS scroll-behavior covers most cases,
+// this handles the ↓ scroll-hint click on browsers that need it)
+document.querySelectorAll('a[href^="#"]').forEach(anchor => {
+  anchor.addEventListener('click', e => {
+    const target = document.querySelector(anchor.getAttribute('href'));
+    if (target) {
+      e.preventDefault();
+      target.scrollIntoView({ behavior: 'smooth', block: 'start' });
+    }
+  });
+});
+
+// Subtle parallax on hero background glow
+const hero = document.querySelector('.hero');
+if (hero) {
+  window.addEventListener('scroll', () => {
+    const scrolled = window.scrollY;
+    const heroHeight = hero.offsetHeight;
+    if (scrolled < heroHeight) {
+      // Move the pseudo-element glow upward slightly as user scrolls
+      hero.style.setProperty('--parallax-offset', `${scrolled * 0.3}px`);
+    }
+  }, { passive: true });
+}

site/style.css

@@ -47,7 +47,7 @@ a { text-decoration: none; }
   content: '';
   position: absolute;
   inset: 0;
-  background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(201,168,76,0.07) 0%, transparent 70%);
+  background: radial-gradient(ellipse 80% 60% at 50% calc(40% - var(--parallax-offset, 0px)), rgba(201,168,76,0.07) 0%, transparent 70%);
   pointer-events: none;
 }